Clark standard element (cell) no. 142

Clark standard element (cell) no

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Clark standard element (cell) no
Science Museum Group
© The Board of Trustees of the Science Museum

Clark standard element (cell) no. 142, PHY 190, 1872, by Warden, Muirhead and Clark, Westminster

Details

Category:
Telecommunications
Object Number:
1989-963
type:
standards
credit:
Muirhead Vactric Components Limited